Question
Biology Question on Human Endocrine System
The hormone 'melatonin' is secreted by the gland
A
Thyroid
B
Adrenal
C
Pineal
D
Pituitary
Answer
Pineal
Explanation
Solution
Pineal gland secretes a hormone called melatonin. Melatonin plays a very important role in the regulation of a 24-hour (diurnal) rhythm of our body. For example, it helps in maintaining the normal rhythms of sleep-wake cycle, body temperature. In addition, melatonin also influences metabolism, pigmentation, the menstrual cycle as well as our defense capability.